Most of the people who install PV solar panels on their roofs, expect to enjoy hot water all year, and maybe a little extra electricity to power a light bulb. In fact, it can do a lot more than that. You can save a lot of money and the initial investment in the panels will pay itself off quite quickly.
In many states and countries around the world, the government is assisting with incentives to those who install PV panels or solar systems. Incentives are also given to certain installers, and the government publishes a list of certified installers from time to time, so you might want to look it up before you install a panel.
Solar systems are used more and more recently, at private properties as well as public or industrial locations. In California, for instance, over 90 public schools installed 
A lot more people are now aware of this technology and its advantages. Also, the fees of buying and installing a 
